Abstract: The machine of the invention includes a separator comprising rotary transport means and sorting means for sorting the soil and the stones collected when digging a trench and for re-depositing them in a desired manner in said trench.

Abstract: An apparatus for picking litter off sandy beaches with minimal sifting of sand. A rotary drum, with unique rigid protrusions and non-rigid projections, is independently powered to roll in the opposite direction as the moving apparatus. The protrusions on the drum dig into the subsurface of sandy beaches and bring up debris that may be lodged in the sand, while the projections toss debris on the surface into the apparatus for collection.

Abstract: PCT No. PCT/CH78/00028 Sec. 371 Date June 5, 1979 Sec. 102(e) Date June 5, 1979 PCT Filed Oct. 9, 1978 PCT Pub. No. WO79/00191 PCT Pub. Date Apr. 19, 1979A mobile endive-harvesting machine has a fixed but position-adjustable uprooting plowshare and a spoked wheel disposed in front of a conveyor. The machine has an uprooting unit consisting of the spoked wheel which is driven at a speed greater than the travelling speed of the machine, and a disc disposed alongside the wheel and rearwardly and transversely spaced relative to the plowshare. The disc and spoked wheel define between them a vertical V.